Ei08183

jrrod2004 · May 22, 2008

Another Engineering Investigation that is going on with the Trucks, much like the paint issue, this was released on May 19, 2008

Service Information

2008 Chevrolet Avalanche - 2WD | Avalanche, Escalade, Suburban, Tahoe, Yukon (VIN C/K) Service Manual | Document ID: 2138349 #08-07-30-024: EI08183 - 6L50, 6L80, 6L90 RWD Leak From Transmission Oil Pan or Oil Pan Gasket (Engineering Information) - (May 19, 2008)

Subject:EI08183 - 6L50, 6L80, 6L90 RWD Leak from Transmission Oil Pan or Oil Pan Gasket (Engineering Information)

<div align="left">Models:2008-2009 Cadillac CTS, Escalade, Escalade EXT, Escalade ESV, SRX, STS, XLR

2008-2009 Chevrolet Avalanche, Corvette, Silverado, Suburban, Tahoe

2008-2009 GMC Sierra, Yukon, Yukon Denali, Yukon XL

2008-2009 HUMMER H2

2008-2009 Pontiac G8

with 6L50, 6L80 or 6L90 Automatic Transmission (RPOs MYB, MYC or MYD)

Attention: Proceed with this bulletin ONLY if the customer has commented about this concern AND the EI number is listed in GMVIS. If the customer has not commented about this condition or the EI does not show in GMVIS, disregard the bulletin and proceed with diagnostics found in published service information. THIS IS NOT A RECALL - refer to Service Bulletin 04-00-89-053B for more details on the use of Engineering Information bulletins.

Condition

Some customers may comment on a leak from the transmission.

Correction

Important: This bulletin ONLY applies to vehicles equipped with Transmissions 6L50, 6L80 or 6L90 (RPOs MYB, MYC, or MYD). For vehicles equipped with transmissions other than these, DO NOT proceed with this bulletin - diagnose and repair according to information found in SI.

If determined through diagnosis that the leak is coming from the transmission oil pan or oil pan gasket, complete the following steps:

Use the J-42220 Leak Detection Lamp and the J-28431-6 Leak Dye Kit to isolate the leak point.
If a leaking transmission oil pan or oil pan gasket is found, contact either of the following engineers BEFORE any repairs are made:

• Technician Name

• Dealership Name and Dealership Phone Number

• Complete VIN and Repair Order Number

Important: If you do not receive a call back within one hour, proceed with repairs to the transmission.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

K9519*

Transmission Oil Leak -- Engineering Information

G8

0.8 hr

CTS, SRX, STS, XLR, Corvette

1.2 hrs

Fullsize Truck/Utilities, H2

1.4 hrs

* This labor operation number is for bulletin use only. This number will not be published in the Labor Time Guide.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

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